Evaluation · Q31
Q.How is rigor mortis happened?
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Start your 14-day free trial to unlock the full solution →Step 1. Cross-bridge detachment during normal contraction requires a fresh ATP molecule to bind the myosin head.
Step 2. After death, ATP production stops, but calcium leaks into the sarcoplasm because the sarcoplasmic reticulum can no longer actively pump it back out, allowing myosin heads to bind actin.
Step 3. With no fresh ATP available, these actin-myosin cross-bridges cannot detach, locking the muscle in a contracted, rigid state. …
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